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High-resolution observations of CH3CN in the hot corino of NGC1333-IRAS4A

Published online by Cambridge University Press:  01 February 2008

Sandrine Bottinelli ,
Cecilia Ceccarelli ,
Roberto Neri  and
Jonathan P. Williams
Sandrine Bottinelli
Affiliation:
Laboratoire d'Astrophysique de GrenobleB.P. 53, 38041 Grenoble Cedex 9, France email: [email protected] Institute for Astronomy, University of Hawai‘i2680 Woodlawn Drive, Honolulu, HI 96822, USA email: [email protected] NASA Astrobiology Institute
Cecilia Ceccarelli
Affiliation:
Laboratoire d'Astrophysique de GrenobleB.P. 53, 38041 Grenoble Cedex 9, France email: [email protected] NASA Astrobiology Institute
Roberto Neri
Affiliation:
Institut de RadioAstronomie MillimétriqueSaint-Martin d'Hères, France email: [email protected]
Jonathan P. Williams
Affiliation:
Institute for Astronomy, University of Hawai‘i2680 Woodlawn Drive, Honolulu, HI 96822, USA email: [email protected] NASA Astrobiology Institute
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Abstract

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The formation and evolution of complex organic molecules in the early stages of solar-type protostars (Class 0 objects) is crucial as it sets the stage for the content in pre-biotic molecules of the subsequent proto-planetary nebula. In order to understand the chemistry of these Class 0 objects, it is necessary to perform interferometric observations which allow us to resolve the hot corino, that is the warm, dense inner region of the envelope of a Class 0 object, where the complex organic molecules are located. Such observations exist for only two objects so far, IRAS16293-2422 and NGC1333-IRAS2A and we present here Plateau de Bure interferometric maps of a third hot corino, NGC1333-IRAS4A, which show emission of the complex organic molecule CH3CN arising from a region of size ~0.8″/175 AU, that is, of the order of the size of the Solar System. Combining these high-angular resolution maps with prior single-dish observations of the same transitions of CH3CN indicates that extended emission is also present, and we investigate the implications for organic chemistry in hot corinos.

Keywords

Stars: formationstars: individual (NGC1333-IRAS4A)ISM: abundancesISM: molecules
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S251: Organic Matter in Space , February 2008 , pp. 117 - 118
Copyright
Copyright © International Astronomical Union 2008

References

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